Figures illustrating the tubes in which Lingula anatifera lives. The upper figure is a view of the trilobed opening of the tube. The lower figure shows the tube in the sand laid open and the animal exposed. The dotted line indicates the position of the body when retrcted. The darker portion is the tube of sand agglutinated by the secretion of the stalk..
Description: English: Lingula anatina shell found in the Mediterranean Sea, in a laboratory of practices of the Faculty of Sciences of the University of Corunna. Español: Lingula anatina encontrado en el Mar Mediterráneo, en un laboratorio de prácticas de la Facultad de Ciencias de la Universidad de La Coruña. Galego: Lingula anatina atopado no Mar Mediterráneo, nun laboratorio de prácticas da Facultade de Ciencias da Universidade da Coruña. Date: 8 February 2007, 12:08. Source: Own work. Author: Drow_male.